【简答题】The author can’t remember his relatives clearly because ________. A) he didn’t live very long with them B) he was fully occupied with observing nature C) he was too young when he lived with them D) th...
【单选题】( )分批地逐步向用户提交产品,每次提交一个满足用户需求子集的可运行的产品。
【单选题】有关磁介质中的安培环路定理,下列说法正确的是?
A.
在稳恒磁场中,磁场强度沿任意闭合回路的线积分为零时,闭合回路内不包含电流。
B.
在稳恒磁场中,磁场强度沿任意闭合回路的线积分为零时,闭合回路内包含的电流代数和为零。
C.
在稳恒磁场中,磁场强度沿任意闭合回路的线积分为零时,闭合回路内包含的传导电流代数和为零。
D.
在稳恒磁场中,闭合回路上任意一点的磁场强度只与闭合回路所包围的传导电流有关。
【单选题】why didn’t the author make an apology to her father?
A.
she thought she was right
B.
she couldn’t find the right words.
C.
she was afraid that her father didn’t forgive her.